exifprint.cpp

Sample program to print Exif data from an image.

00001 // ***************************************************************** -*- C++ -*-
00002 // exifprint.cpp, $Rev: 631 $
00003 // Sample program to print the Exif metadata of an image
00004 
00005 #include "image.hpp"
00006 #include "exif.hpp"
00007 #include <iostream>
00008 #include <iomanip>
00009 #include <cassert>
00010 
00011 int main(int argc, char* const argv[])
00012 try {
00013 
00014     if (argc != 2) {
00015         std::cout << "Usage: " << argv[0] << " file\n";
00016         return 1;
00017     }
00018 
00019     Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(argv[1]);
00020     assert(image.get() != 0);
00021     image->readMetadata();
00022 
00023     Exiv2::ExifData &exifData = image->exifData();
00024     if (exifData.empty()) {
00025         std::string error(argv[1]);
00026         error += ": No Exif data found in the file";
00027         throw Exiv2::Error(1, error);
00028     }
00029     Exiv2::ExifData::const_iterator end = exifData.end();
00030     for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
00031         std::cout << std::setw(44) << std::setfill(' ') << std::left
00032                   << i->key() << " "
00033                   << "0x" << std::setw(4) << std::setfill('0') << std::right
00034                   << std::hex << i->tag() << " "
00035                   << std::setw(9) << std::setfill(' ') << std::left
00036                   << i->typeName() << " "
00037                   << std::dec << std::setw(3)
00038                   << std::setfill(' ') << std::right
00039                   << i->count() << "  "
00040                   << std::dec << i->value()
00041                   << "\n";
00042     }
00043 
00044     return 0;
00045 }
00046 catch (Exiv2::AnyError& e) {
00047     std::cout << "Caught Exiv2 exception '" << e << "'\n";
00048     return -1;
00049 }

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